<header class="header-tmall w1230">
  <section class="w1230">
    <div class="header_logo">
      <img src="https://img.alicdn.com/tfs/TB11ojWRXXXXXafaFXXXXXXXXXX-190-27.png" alt="">
    </div>

    <div class="header_search">
      <input type="text" class="search_val" value="女装新品">
      <button class="search_btn">搜索</button>
    </div>
  </section>

</header>